MPP Cores

What is MPP?

Magnetics Molypermalloy Powder (MPP) cores are distributed air gap cores made from a 79% Nickel, 17% Iron, and 4% Molybdenum alloy powder for the lowest core losses of any powder core material. MPP cores possess many outstanding magnetic characteristics, such as high resistivity, low hysteresis and eddy current losses, excellent inductance stability after high DC magnetization or under high DC bias conditions and minimal inductance shift up to 2000 gauss under AC conditions. Applications for MPP cores include; Flyback Transformers, Buck/Boost and Power Factor Correction (PFC), Inductors, In-Line Noise Filters, High Q Filters, and Resonant Circuits.

For more technical information, view the official MPP Material Property Curves

What applications are MPP cores best suited for?

MPP cores offer the lowest core losses of any powder cores, making them ideally suited for flyback transformers, Buck/Boost and Power Factor Correction Inductors. The distributed air gap of an MPP core minimizes stray magnetic fields and eliminates gap loss problems associated with gapped ferrite cores.

MPP cores are the ideal choice where high Q and high inductance stability under adverse magnetic and environmental conditions are needed such as In-line Noise Filters, High Q filters and Resonant Circuits.

What are the advantages of MPP cores?

Lowest core loss of all powder core materials offered by Magnetics

Very high Curie temperature

Small shift in permeability with temperature

Small shift in saturation with temperature

Reversibility of temperature effects

Resistance to mechanical shock and strain

Temperature stabilization for special applications

What is the difference between standard, controlled and linear temperature stabilizations?

Magnetics MPP Cores are provided in three basic temperature stabilizations; Standard, Controlled and Linear. Typical guaranteed inductance limits for these temperature stabilized cores can be found in the Powder Core Design Manual's MPP Temperature and Linear Stabilization section.

What are MPP THINZ™?

MPP THINZ™, or Molypermalloy Powder washer cores, offer an extremely low height self shielded power inductor core allowing finished inductor heights in the 1.5 mm to 2 mm range. Excellent temperature stability, superior inductance under DC bias, and low core losses highlight the outstanding magnetic properties of THINZ.